Toxicity and Growth Assessments of Three Thermophilic Benthic Dinoflagellates (Ostreopsis cf. ovata, Prorocentrum lima and Coolia monotis) Developing in the Southern Mediterranean Basin
|Author(s)||Ben-Gharbia Hela1, Yahia Ons Kefi-Daly1, Amzil Zouher2, Chomerat Nicolas3, Abadie Eric4, Masseret Estelle4, Sibat Manoella2, Triki Habiba Zmerli1, Nouri Habiba5, Laabir Mohamed4|
|Affiliation(s)||1 : IRESA Carthage Univ, Tunisian Natl Inst Agron, Res Grp Oceanog & Plankton Ecol, 43 Ave Charles Nicolle, Tunis 1082, Tunisia.
2 : IFREMER, Phycotoxins Lab, Rue Ile Yeu,BP 21105, F-44311 Nantes 3, France.
3 : IFREMER, LER BO, Stn Biol Marine, Pl Croix,BP 40537, F-29185 Concarneau, France.
4 : Univ Montpellier, Ctr Marine Biodivers Exploitat & Conservat MARBEC, IFREMER, CNRS,IRD, Pl Eugene Bataillon,CC093, F-34095 Montpellier 5, France.
5 : IRD, 2 Rue Sports El Menzah 1,BP 434, Tunis 1004, Tunisia.
|Source||Toxins (2072-6651) (Mdpi Ag), 2016-10 , Vol. 8 , N. 10 , P. 297 (1-8)|
|WOS© Times Cited||53|
|Note||This article belongs to the Section Marine and Freshwater Toxins|
|Keyword(s)||Ostreopsis cf. ovata, Prorocentrum lima, Coolia monotis, Southern Mediterranean Sea, growth, toxicity|
|Abstract||armful benthic dinoflagellates, usually developing in tropical areas, are expanding to temperate ecosystems facing water warming. Reports on harmful benthic species are particularly scarce in the Southern Mediterranean Sea. For the first time, three thermophilic benthic dinoflagellates (Ostreopsis cf. ovata, Prorocentrum lima and Coolia monotis) were isolated from Bizerte Bay (Tunisia, Mediterranean) and monoclonal cultures established. The ribotyping confirmed the morphological identification of the three species. Maximum growth rates were 0.59 ± 0.08 d−1 for O. cf. ovata, 0.35 ± 0.01 d−1 for C. monotis and 0.33 ± 0.04 d−1 for P. lima. Toxin analyses revealed the presence of ovatoxin-a and ovatoxin-b in O. cf. ovata cells. Okadaic acid and dinophysistoxin-1 were detected in P. lima cultures. For C. monotis, a chromatographic peak at 5.6 min with a mass m/z = 1061.768 was observed, but did not correspond to a mono-sulfated analogue of the yessotoxin. A comparison of the toxicity and growth characteristics of these dinoflagellates, distributed worldwide, is proposed.|